LiveShareServer: Timer does not seem to always send data

[Jente Heremans]

Data is not received on the clients on every timer event.
The following is observed in test:

Normal LiveShareServer timer period (1 second):
Every second data is received. Every few data packets, a delay of about 2 seconds is added, resulting a 3 second packet interval.
The normal rate resumes (every second), until after a few packets the loop repeats.

When extending the Timer period to 15 seconds:
Every 15 seconds data is received. On the second packet, the delay is 30 seconds instead.

Not a major issue considering the normal period is low. This does indicate an issue in the (already messy) LiveShareServer code